CN110549225A

CN110549225A - Yarn guide wheel for diamond wire cutting lathe

Info

Publication number: CN110549225A
Application number: CN201910918130.6A
Authority: CN
Inventors: 邱潇; 焦福生; 闫旭华
Original assignee: Karamay Onco Energy Technology Co Ltd
Current assignee: Karamay Onco Energy Technology Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2019-12-10
Anticipated expiration: 2039-09-26
Also published as: CN110549225B

Abstract

The invention discloses a yarn guide wheel for a diamond wire cutting lathe, which is a linear groove nonmetal guide wheel, and the preparation method comprises the steps of S1, processing the nonmetal composite material into a circular ring shape; s2, processing a straight-line-shaped groove on the circular ring of the step S1 according to the diameter of the yarn, and processing four fixing screw holes according to square distribution to obtain the straight-line-shaped groove nonmetal guide wheel. Compared with the prior art, the invention can reduce the loss of the diamond yarn and improve the cutting quality.

Description

Yarn guide wheel for diamond wire cutting lathe

Technical Field

The invention relates to the technical field of diamond wire saw cutting, in particular to a yarn guide wheel for a diamond wire cutting lathe.

Background

The diamond wire cutting refers to a filamentous 'saw blade' formed by uniformly plating diamond abrasive particles on a steel wire, the cutting mechanism of the diamond wire cutting is grinding and grinding similar, the service life of the wire cutting machine is greatly prolonged by the cutting mode of the fixed abrasive, the diamond wire cutting machine has the characteristics of wide cutting range, narrow cutting slit, high cutting efficiency and precision and the like, and meanwhile, the pollution to the environment when the cutting fluid is replaced in the cutting of the free abrasive wire saw can be avoided. By virtue of excellent cutting performance, the diamond wire cutting technology is currently most widely used in cutting of hard and brittle materials.

With the wider application of the diamond wire saw cutting technology, the research and development and application of the diamond wire saw cutting equipment become hot spots in the industry in recent years.

CN108995051A discloses a diamond wire saw cutting method, S1, constructing a first mounting hole and a second mounting hole along a cutting line of a cutting body; s2, mounting a first guide wheel and a second guide wheel on the first support rod; s3, mounting a third guide wheel, a fourth guide wheel and a fifth guide wheel on a second support rod, and S4, penetrating the rope chain from the rotating wheel of the rope saw through the five guide wheels and connecting to form a closed loop; and S5, fixing the first supporting rod and the second supporting rod, connecting the cooling water pipes, and finally performing cutting construction. The invention solves the problems that the existing cutting method can only surround the cutting body by the rope chain to cut and can not cut the cutting body which can not be surrounded.

CN109352496A discloses an electrostatic spray diamond wire saw cutting machine, including the diamond saw silk, wire storage wheel and leading wheel, the wire storage wheel is provided with two and connects respectively in the both ends of diamond saw silk, the wire storage wheel is used for accomodating storage diamond saw silk, the leading wheel is provided with four and regular spread, the diamond saw silk is stretched out on the leading wheel multilayer winding from a wire storage wheel and is accomodate along another wire storage wheel, wherein the diamond saw silk between two leading wheels constitutes cutting part, the both sides of cutting part top respectively are provided with the nozzle that is used for spraying the cutting fluid, the nozzle is connected with high-voltage electrostatic generator. According to the invention, the electrostatic spraying technology is introduced into the cutting field of the diamond wire saw, and the cutting fluid moves along the surface of the grounding diamond wire saw under the action of an electric field force, is adsorbed on the surface of the wire saw and enters a cutting area along with the wire saw, so that the quantity of the cutting fluid in the cutting area is increased, the cutting surface quality and the cutting efficiency of a workpiece are improved, and the service life of the wire saw is prolonged.

The diamond wire cutting machine drives the diamond yarn to do reciprocating motion to cut the material by utilizing the high-speed reciprocating rotation of the wire winding barrel, is widely suitable for cutting various metals, non-metals and composite materials, and is particularly suitable for cutting various brittle materials which have high hardness, high value and are easy to break.

In order to increase the cutting precision and the flatness of a cutting surface, the diamond wire cutting machine is provided with a guide wheel for guiding, and the design of the guide wheel directly influences the cutting quality of materials. Currently, the guide wheel in the prior art is usually designed in a V shape (fig. 1). However, the application has found that guide wheels of this design have two problems during cutting: on one hand, the metal guide wheel has great loss to the yarn in the cutting process, and the cutting life of the diamond yarn is seriously influenced; on the other hand, the limiting force of the V-shaped groove design on diamond yarns is insufficient, the yarns are easy to transversely swing in the cutting process, so that the cutting surface presents partial grooves and intermittent scratches and is more and more obvious along with the increase of the cutting rate, and the cutting surface quality and the cutting efficiency of a workpiece are reduced. Therefore, it is necessary to design a new diamond wire cutting guide wheel.

Disclosure of Invention

In order to solve the technical problems, the invention provides the yarn guide wheel for the diamond wire cutting lathe, which can reduce the loss of diamond yarns and improve the cutting quality.

in order to achieve the purpose, the invention adopts the following technical scheme:

A yarn guide wheel for a diamond wire cutting lathe is a non-metal guide wheel with a linear groove.

Preferably, the non-metal guide wheel is circular.

Preferably, the non-metal is a lightweight, wear resistant non-metal composite.

preferably, the non-metallic composite material is ultra high molecular weight polyethylene (UPE).

Preferably, the molecular weight of the ultra-high molecular weight polyethylene is 280-380 ten thousand.

Preferably, the circular ring is provided with a straight-line-shaped groove.

Preferably, the width of the straight-shaped groove is 1.1-1.2 times of the diameter of the yarn; further preferably, the width of the straight groove is 1.125 times of the yarn diameter.

The invention relates to a preparation method of a yarn guide wheel for a diamond wire cutting lathe, which comprises the following steps:

s1, processing the nonmetal composite material into a circular ring shape;

S2, processing a straight-line-shaped groove on the circular ring of the step S1 according to the diameter of the yarn, and processing four fixing screw holes according to square distribution to obtain the straight-line-shaped groove nonmetal guide wheel.

Preferably, the width of the straight-shaped groove is 1.1-1.2 times of the diameter of the yarn.

The invention also provides application of the yarn guide wheel for the diamond wire cutting lathe in diamond wire cutting.

The invention has the beneficial effects that:

(1) The wear resistance of ultra-high molecular weight polyethylene (UPE) is 8 times that of common carbon steel, and the UPE is arranged in a plastic crown; the impact resistance is 6 times that of ABS, and is the first of plastics; the self-lubricating property is equivalent to that of polytetrafluoroethylene, and the price is only 1/8; meanwhile, the coating has the advantages of corrosion resistance, high chemical and technical performance, good non-stick property, difficult adhesion of the surface of a product with other materials and the like. The invention abandons metal on the manufacturing material, and adopts the ultra-high molecular weight polyethylene material to process and manufacture, and the material can sacrifice a little of the service life of the guide wheel, reduce the friction loss between the yarn and the guide wheel, and achieve the purposes of protecting the yarn and delaying the service life of the yarn.

(2) Compare traditional V style of calligraphy groove, a style of calligraphy is stronger to the lateral shake restrictive character of equipment operation in-process diamond sand line, and the horizontal hunting of yarn when can showing the reduction cutting makes the cutting plane more smooth, provides the cutting quality.

drawings

FIG. 1 is a conventional V-shaped groove guide wheel;

FIG. 2 is a schematic front view of a linear guide wheel according to the present invention;

FIG. 3 is a schematic left view of the linear groove guide wheel of the present method;

in the figure, 1, a circular ring shape, 2, a straight-line-shaped groove, 3 and a fixing screw hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings.

When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Fig. 1 shows a conventional V-shaped groove guide wheel, which is circular and is usually made of metal.

Fig. 2 and 3 show a yarn guide wheel for a diamond wire cutting lathe, which is a non-metal guide wheel with a linear groove, the non-metal guide wheel is a circular ring 1, the circular ring 1 is provided with a linear groove 2 and 4 fixing screw holes 3 distributed in a square shape, and the non-metal is a light and wear-resistant ultra-high molecular weight polyethylene non-metal composite material. Preferably, the molecular weight of the ultra-high molecular weight polyethylene is 280-380 ten thousand. The width of the straight-shaped groove is 1.1-1.2 times of the diameter of the yarn; further preferably 1.125 times.

Example 1

A yarn guide wheel for a diamond wire cutting lathe selects an ultra-high molecular polyethylene non-metal composite material with low volume wear rate and low density as a manufacturing material of the guide wheel, and the preparation method comprises the following steps:

S1, processing the ultra-high molecular weight polyethylene non-metal composite material with the molecular weight of 280 ten thousand into a ring shape with the inner diameter of 20mm, the outer diameter of 60mm and the thickness of 8mm by using a lathe;

And S2, processing a straight-line-shaped groove with the width being 1.1 times of the diameter of the diamond yarn on the circular ring obtained in the step S1 by using a lathe, and processing 4 fixing screw holes according to square distribution to obtain the non-metal yarn guide wheel with the straight-line-shaped groove.

Example 2

S1, processing the ultra-high molecular weight polyethylene non-metal composite material with the molecular weight of 380 ten thousand into a ring shape with the inner diameter of 20mm, the outer diameter of 60mm and the thickness of 8mm by using a lathe;

And S2, processing a straight-line-shaped groove with the width being 1.2 times of the diameter of the diamond yarn on the circular ring obtained in the step S1 by using a lathe, and processing 4 fixing screw holes according to square distribution to obtain the non-metal yarn guide wheel with the straight-line-shaped groove.

example 3

S1, processing the ultra-high molecular weight polyethylene non-metal composite material with the molecular weight of 300 ten thousand into a ring shape with the inner diameter of 20mm, the outer diameter of 60mm and the thickness of 8mm by using a lathe;

And S2, processing a straight-line-shaped groove with the width being 1.125 times of the diameter of the diamond yarn on the circular ring obtained in the step S1 by using a lathe, and processing 4 fixing screw holes according to square distribution to obtain the non-metal yarn guide wheel with the straight-line-shaped groove.

comparative example 1

This comparative example differs from example 3 in that the ultra high molecular weight polyethylene material has a molecular weight of 400 ten thousand and the width of the straight groove is 1.25 of the diameter of the diamond yarn.

Comparative example 2

This comparative example differs from example 3 in that the ultra high molecular weight polyethylene material has a molecular weight of 400 ten thousand and the width of the straight groove is 1.05 of the diameter of the diamond yarn.

Comparative example 3

This comparative example differs from example 3 in that the linear groove of the present invention was replaced with a conventional V-shaped groove.

Experimental example 1

The non-metallic yarn guide wheels of linear grooves prepared in the above examples 1 to 3 and comparative examples 1 to 3 were fixed to a movable spindle of a diamond wire cutting lathe (minx digital control equipment ltd, texas, model QT56) with a screw, and a fused quartz crystal of Φ 400mm was cut at the same linear speed of 4m/s and the same feed rate of 0.4mm/min, and the processing effect was examined and the time from start-up to breakage was recorded, and the specific examination results are shown in table 1.

TABLE 1 test results

	Roughness/mum	Yarn break time/h
			example 1	0.434	45
Example 2	0.516	42
			Example 3	0.326	58
Comparative example 1	1.369	25
			comparative example 2	0.982	29
Comparative example 3	1.028	30

according to the detection result, the diamond wire cutting machine provided with the linear groove type nonmetal yarn guide wheel prepared by the invention can cut fused quartz with high quality, the surface roughness Ra is low after cutting, and the service life of the diamond yarn is greatly prolonged.

Compared with the traditional V-shaped groove, the linear groove has stronger limitation on the transverse shaking of the diamond sand line in the operation process of equipment, can obviously reduce the transverse swing of the yarn during cutting, ensures that the cutting surface is smoother and provides cutting quality; meanwhile, metal is abandoned on the manufacturing material, the ultra-high molecular weight polyethylene material is adopted for processing and manufacturing, the material is adopted to sacrifice the service life of a few guide wheels, the friction loss between the yarn and the guide wheels is reduced, and the purposes of protecting the yarn and delaying the service life of the yarn can be achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A yarn guide wheel for a diamond wire cutting lathe is characterized by being a non-metal guide wheel with a linear groove.

2. The yarn guide wheel for a diamond wire cutting lathe according to claim 1, wherein the non-metal guide wheel is annular.

3. The yarn guide wheel for a diamond wire cutting lathe according to claim 2, wherein the nonmetal is a lightweight and abrasion-resistant nonmetal composite material.

4. the yarn guide wheel for a diamond wire cutting lathe according to claim 3, wherein the non-metallic composite material is ultra-high molecular weight polyethylene.

5. The yarn guide wheel for diamond wire cutting lathe as claimed in claim 4, wherein the molecular weight of the ultra-high molecular weight polyethylene is 280-380 ten thousand.

6. The yarn guide wheel for a diamond wire cutting lathe according to claim 2, wherein the circular ring shape is provided with a straight groove.

7. The yarn guide wheel for a diamond wire cutting lathe according to claim 6, wherein the width of the straight-shaped groove is 1.1 to 1.2 times the diameter of the yarn.

8. a preparation method of a yarn guide wheel for a diamond wire cutting lathe is characterized by comprising the following steps:

S1, processing the non-metal composite material of any one of claims 1 to 7 into a circular ring shape;

9. The method of claim 8, wherein the width of the straight groove in step S2 is 1.1-1.2 of the yarn diameter.

10. Use of a yarn guide wheel for a diamond wire cutting lathe according to any one of claims 1 to 7 in diamond wire cutting.